A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6650-01-155-1555
NSN 6240-01-480-8996
NSN 6320-00-270-8222
NSN 7035-01-261-9850
NSN 5998-00-509-1445
NSN 6320-01-103-6218
NSN 5930-01-099-9081
NSN 6240-01-569-6904
NSN 5960-01-358-7612
NSN 6320-01-433-3953
NSN 2925-01-189-4272
NSN 5925-01-008-0225